{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667016904",
    "entityType": "User",
    "nonce": "0xda3669915469c6987b1c5bdef1e95fc4dec7cdd7abb7bf122e971a8d07922a55",
    "signature": "0x888d7ccafef9c24f3d9689b4d408829f9e32467ec201a71b851f3878dbb415c933b73743c917caa39c4b06fed1240a9ee2f06face899c378a8fbfd882c27cde01b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}