{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac1e04a60d13dc500fd0d2520a1b0ac4a09ff1fc4d1d50e175fca4bb3186c1cf",
    "signature": "0x3286e3036d482be1916348825f4f2950979a0943253f81fa952dda1aa0f62d532cbe1f303643d561316cd872a254fd2316206dd6ea1308a493fe53e32adcd30f1b",
    "signer": "0x1493F6883DDc36086273F3eD2c8F1C8E0Bb4f571",
    "userId": "321591746"
  }
}