{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631140",
    "entityType": "User",
    "nonce": "0x39af9c5e19e213f41454b4f6518a6470b837605b03639e9c488d2b0303929a3a",
    "signature": "0xe82752bd75670d84eb80f44f4c4113e5426ddc9ec4826bc12345c2165810bc0f358ff7ac8964cd183c06d60860954b4ffa8ed23135ee194f5f8602e34c2c3a7f1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}