{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "572703948",
    "entityType": "User",
    "nonce": "0xa9346648388bf8ea571fd02ce4a924527f6b3375031866866ca5be3c9e1e1ec9",
    "signature": "0xc2f586251fc3cbeb52a2fbed043ac93a4e2dee8baf9d2d9513d532017865950f4059c3ec4d5b223a16e06b032a57e268375ce2382d8a5db2ff12777e69ca6b751c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}