{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0x5e9bf8d8494137b234c0641beea848a20d1b045817c4cebd4398e8e63dedd8b0",
    "signature": "0x0ff44ac07bd89e07bb38f6785050c98f7c5803900363fff2739345fe6dff929768525e78798bd050f7ad05c657c2a71ac345a742f7579f86d3637cf55d4c9ef41c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}