{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1104",
    "entityType": "User",
    "nonce": "0x41f9271a1a4d2ab08bedb41d4bea0fe5e15c984fb8c5e8ea60a8851a21fd366a",
    "signature": "0x6cdbf3b3db847d618c9dd7537923d7b5ed9f31ee44d1ec99f63e5eb31d3e1d2d10f533c3a2480331f7698f7c153252cd498865fbaffafd2602c07c1d01d3e6d71c",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}