{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a98ce9efff557582cfb44b0bbeb05605c7c471f07538971bd361c9f3ea5923a",
    "signature": "0x0bafdf48b7da42bbae9d21aaad4d331a59dc0d119ae7fd8d09cba77fa6a1780f60890a0dd5e2af8d4c655fa921cb9bfbc40ca56d8b8a1fadade89040640c41ec1b",
    "signer": "0x31E3CF79b2035cE2606cE62eC5A570fA4B240739",
    "userId": "923119708"
  }
}