{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57703",
    "entityType": "User",
    "nonce": "0x6627b48e2c50126ebb963062a6a16a19bce0dfbf56c1e16e4515b32433314ff5",
    "signature": "0x212c41111b90a27e6aeec63d2710e89bc4027062123b1a5fb88370a9dc83509a30b45c9423065b3fc956d19e396bdcc291bc42d9b6fedd5edc6d16be4b66543c1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}