{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "61566",
    "entityType": "User",
    "nonce": "0x68a6a7b7bcc5df2c3886a0ae2a7a78fa0e437554bb8fb057694ea058e6cd5b92",
    "signature": "0x21f7cabcfe5f49ea83b3717ce613a5908fe5b653f49209f432e1c756be1964216f5af0a4204fb882b1072356aa867486676c38484cdc91719511ff3ba56cd1871c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}