{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc184aba359e27f272940066ab3fbaf92a08374bf89ffb5422823f85766efb1b0",
    "signature": "0x5cb6e82a82149e72c54285f0fd4ad602e44a121e57c19770b061190bb4771c0c5dfccef911c9150a99bf9ef83e352ea2769636cd3176b5434ccfb5d2b8ffd9e01b",
    "signer": "0xbF7B4bC8d04c48b9F4342D7713F146EdBEBA4E4b",
    "userId": "821147482"
  }
}