{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa4e036d75ecf934b3e2bca049c68c2ba181717de20f81fdb226fb5fba5f2fcb3",
    "signature": "0xe4fa283b7fdfdee4e5ce68934313d30015850fa5037691b0d5895c10e7fd0c9135da57b22382eeeeb448e51e97f59ef9d2402052b7ad97cd87d1bc77cdf3da071c",
    "signer": "0xf03E2eb658f4057Ea4255CF34BcE6009938B86f6",
    "userId": "904522318"
  }
}