{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18534721",
    "entityType": "User",
    "nonce": "0xa3ccea3147d31e1d7e0324f9adaec487063ca5f915ece8fa552a9ca31ee06af0",
    "signature": "0xa84a380e87df6d93f6b598c0e2251a32115130e18db826a3700ee65c92c1ddec5079282e9d984c20f12aa80fd177abf9bfe89a3fbca19cf3b633f73dcea3c1d01c",
    "signer": "0x9Ebaa539cfe874f2a12f954d5f135d41C75Eac9A",
    "userId": "872121325"
  }
}