{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7b93dcf9a1ae094dcbcf6c81bb150c8e5c22ec1491c38387d64250807d263b16",
    "signature": "0x586791f9e76b7867f6a803c2c9c0bf4a80fc3dd97ec4d1c1ce614f0e7ca2692207c5edac06587c637de0feffc3e72bf70ebc6fd48e5b8c9952798ca0c987037a1b",
    "signer": "0x90336978123880996d16F1b2ECF206DFf96D3e72",
    "userId": "505271212"
  }
}