{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "595871432",
    "entityType": "User",
    "nonce": "0xd887c704d70eeb9238ca453280ed3a01b0182fdd08e0fbf1730a0002d04d576c",
    "signature": "0x7c869f3f55c99041f1510fcdb60e2422d038430e461345ad09b2f74f5bfaa2aa0ed0a08b8d3b6dea23119edc2432a5d756e3828e288b9f88e47ba3cac3b897461b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}