{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615703",
    "entityType": "User",
    "nonce": "0xd5ff7f233d86373ae1f0380aed884b89cbc09c3a3dfe04d701d625a440db54df",
    "signature": "0x6b7fdd35dd10922c1226b231547df9a68bf322bfe95cc7dea57c4811ce13180363ad1263e320848adeef16ff700766c89e9263808d82284a4b88ad562c42c6bb1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}