{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x12bc5ac14a29ddc5bef66605630b8b00c8373f2cc33c7129e7593ba90717a731",
    "signature": "0x654723d1a29cd8e6cd1458290e1087025b8fecd4e7de8e85c8b0b1f563e9e8481666574d2b56b4cca1f0437ea060e80ba8f210a246606f911139046a605e0d121c",
    "signer": "0xE22639FD840080b20889373FEa6060B4757eB9c1",
    "userId": "274627911"
  }
}