{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fcbd12d29afbec5df435573c3084c0a1ba2c3d27afb5afd6e0cca9a3f1e49ac",
    "signature": "0x82f2e245129d4f576f852d494ccd63567c72a51e63b1b7dcfa35498146130be671e1d275433cb3cd3e5e19a16ba291cd579e320559e3784490d566ca78c458db1b",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}