{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "855755014",
    "entityType": "User",
    "nonce": "0xedb21992261197c80a8b17e9d7a8d04ecace530253edb4a83b6155372b7861e3",
    "signature": "0x15ffcd941004e8ff4307cf9e79e1fbfc6c792f1b55e7dfb3ae18b60bfdd82fa42fb726cd56b1aeeb6f150269f03b0e63b000b7bdad96647d82d45632e3da03d11b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}