{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c621c0eb5d51800d75b6c4a9391d540442e14f98830d68f8bb8743d1123b873",
    "signature": "0xba90c2cd57ff1527a2c1ab9349a984f46acfb919fff9fa62b670b8f4bb4637937a525f310927a73b6ff16a6aa6f0b7715d7774b482464cdbc18a6509053cf60e1b",
    "signer": "0x8b0C711ff0FA3Df8055084F48B41D04735943A6B",
    "userId": "349084581"
  }
}