{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1c0a83ec6891e6509c9a4ac4836b48413751115f8a3d1bc36f485fc4ce5547be",
    "signature": "0xbe4c655e2c4d1bff51d44bf0f4ea298052b8e46125e170b3f68cff1df8eb480b237aa0ff0caac9883378b91fc35d4e5e56f96ac731561f0b01cbcf041cf0f2c71c",
    "signer": "0xA7918C87dDD243c00f953b896f5B365b622f86f8",
    "userId": "331375509"
  }
}