{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75120",
    "entityType": "User",
    "nonce": "0xb4a4a84ee628a081f66d57116b4645cc5ff27b369e52775b2686e53d36e2a9b7",
    "signature": "0xbd2caa3dcb19c5c8b014ffb19c1f9ef350b7a11402754541647f98b6eda161a43ef1536be4e1ab5703f6d15f6ead18bf272a9a54d3e2167d90a873e85ef03b771c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}