{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xc5d821c69d9b8967d39e79781c269af880cda3b8e3e2dd9cdfe128e93baf9a56",
    "signature": "0x8f75c5b7b1ceab4fe73f93d428aac314de01514f1ddf838d06af77731872633d3b75f90b55629501f7b247ea65e5811f316eb0b71c0957bf225fe6da5fc948c41b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}