{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "877304859",
    "entityType": "User",
    "nonce": "0xa1aa1f99c34c059adde1b933e4f5081abad073e69e2552424e2249b113d3d1da",
    "signature": "0x09db4687b8a6531693606e4d18248cdb14e4994973456155775f80cf34fb47401023d425c0c4cbe135e60c7b612df709386a9aa64f4cabb5ef45e929921bb7f01b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}