{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0x58c0d24d7d4fe5f2b5f1df248d5e8f76949f4f0c41496ed6cb0d7fb0023f4504",
    "signature": "0x69d18b9e30388e6bfb2e385db5f215d523232f37f1fd587a06b85876e72abaec14b7b3c0ca1670ed0371240de1f906b10fad72d7b511e3ec1b07aade00be08511c",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}