{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6f0d5ef136103030128408a68f05d3e0433f1a6f65b8d01b3d1b959bee6fc8ae",
    "signature": "0x0c8a71fc1529e764d7da5b1b82c0c7ab748c872fb39df76014c515d17057b6940afa0434c93fde653b04fe8b04814359316b1def25556f8eaf09a6fa7d7880831b",
    "signer": "0x90336978123880996d16F1b2ECF206DFf96D3e72",
    "userId": "505271212"
  }
}