{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d7810806968d27007aebd7850e7adf7a34be532e8d6491e4baac5848f39cb12",
    "signature": "0x472270837262900f7e3c76f7265e45ff338c41f411c73d91e9de13c6a2cb3a4c6da96e063264c2c917fb3a5934a4de807950d2dfb6f9736a3fa999c9ec9b84661b",
    "signer": "0xD1467E5DC334fE6Ce602D0Dd0C8044c1e29E1F31",
    "userId": "4745341"
  }
}