{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "588448440",
    "entityType": "User",
    "nonce": "0x5b7b8eaf8cca2ba56fc611d17e04b667c33fdc85b928802a188f3218dd9b4787",
    "signature": "0x71c5f56321e8bbb4ed47ed0a4a0b6d26457ea0b1099c4d6698fc55a7eda5bd567dc089f4aa0c43972c80cbd2b932a7950c18fde99f31f12e55bbbca6de95c1071c",
    "signer": "0xdddeF2ffc1Fc807501ea628cb4d9b7Af4a70A199",
    "userId": "225696838"
  }
}