{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0674f40159686614d388f60ea7a176499d57a325ad3e77a3dc98a8d1776a5e16",
    "signature": "0x51cf4623b5450fb074785493bcf37a0815e2f1de2bc9f13c9e67e0a9f30a770c22c2074a077caf66f79f41f9f11e5407fa4c12cbb1e95af526a991d3ac70c0ec1c",
    "signer": "0xba19f919eef93601b59Ed95638575E4a4E2F497E",
    "userId": "353361219"
  }
}