{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c42aa843b68e890e80ee92a06bcde5977b1e4667ebcd6c58e4ccdd6bf004dc5",
    "signature": "0xe55c946fe88ac053249f36bbae168fdb8c8c0163ed975ec7fa64e0f1adf1940a131f87e29726a610ca7f95fda93a489a77652402cf8c889972715dd06f6bd1bd1c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}