{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x488b05453195d62cff30f191119b05cc02f936d0e606f2ae7bd98cfbe643c667",
    "signature": "0x88e3b9917111f9558028d7265652b047df9cef1338a62be8731c2b239ed95c4a4b91fa1d9442753a099cc594332e8359c42fcd860d92e66a330d03d26bcf73b21c",
    "signer": "0x7cf8A1d269e7A3Ee5e3247a0A2662C0f4c77cB59",
    "userId": "686744394"
  }
}