{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x57b4e6a66ab94b06437248ec94c6035c29ec0ef14ca6ce40fff1c6e4f8274fdb",
    "signature": "0xcbbb57a273efcd871b6b8340207530635bda8ef16baefb4627f7c5359ee7ff2047e1e60fc59954ae247264ee949198c50ea26ba77d9c378c0287e1087ba037651c",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}