{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545926315",
    "entityType": "User",
    "nonce": "0xc507093c20b60c0febca02b56d04b5a23a00778293cd8cc2455775ec2e17e2e0",
    "signature": "0x18e8a6a6b39bbe60cfab1a70325d5ed11269412858427b4f256299c5b67f170b7584c3ac02a718db518e268ede5b52c11d62e0814f87906e0fd81f994d715ea91c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}