{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x16844bfe6ade70afb2cdd3de58012c45d9b853986aab64c956d7ac4b6eebd898",
    "signature": "0xec29cd87f75187bd64f0426136751d438cb963d3e1ca121bd0e756bac8f8b6d379f165450603c7944ded7249cfe03f969ef717b6077e958ac2229c6d24b2e66b1b",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}