# Basic parameters

Basic parameters for subscription requests, with the same parameters for each subscription event.

Request param：

| name      | type    | required | detail                |
| --------- | ------- | -------- | --------------------- |
| method    | String  | √        | SUBSCRIBE/UNSUBSCRIBE |
| event     | String  | √        |                       |
| apiKey    | String  | √        |                       |
| timestamp | Long    | √        |                       |
| signature | String  | √        |                       |
| signType  | Integer | √        | secp256k1             |

Response param：

Basic parameters for subscription request responses.

| name    | type    | required | detail                |
| ------- | ------- | -------- | --------------------- |
| success | Boolean | √        | true,false            |
| msg     | String  | √        | response message      |
| method  | String  | √        | SUBSCRIBE/UNSUBSCRIBE |
| event   | String  | √        |                       |