{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "818521868",
    "entityType": "User",
    "nonce": "0xd828d48c025fd6d41eb9faafdd9bebdede9c481c92b1da4d3d0b8de7607905b3",
    "signature": "0xfbc4c21522c5c05e4f628a67ba72374832491867bcedf80249855c6ca63bf65f1fd61d68cecd2bb1911815c89ba416e839b3a63717533cd525602c5b947e55ea1c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}