{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xea59f3b56c6d0501ae49de425fc8642a8603fed84ab8be16deb86244f4c46b8f",
    "signature": "0xecdfd4ba368f0a1b5a6055719d4cce0b5f33e201143017ed6cafb37d9abf9c737ed16ba4e43f1faef0d8ac8ca1b0618cd80889687ef08bfb0ed68956d53d50df1c",
    "signer": "0x385724dD7df996433e732c73201a749C6B37f65A",
    "userId": "260480467"
  }
}