{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "99021",
    "entityType": "User",
    "nonce": "0x6cade2c51522b4ad932b0e5b66060e1636a9f8d3fb86801574a4c9090e38a523",
    "signature": "0x4cda21ea231167288f076b3be46ef5f94b63b7def2c6b3f1948418c82d3dad09709d472f5486cc67e7b15ef24f2bf8b58c988d7ab08fad3e78079b673fe891361c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}