{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xfe90fa382345baba90f53cb056051c2d1524c4becc9076b6a82e330dea468e01",
    "signature": "0x39ffc94d96d82002615df76f68c9f54085ea436a0f2299e85334bf35de241bf11b192616ae09350373bf255e540c36aa02a065217fdd53ffe390e8858c715a371c",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}