{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1139109",
    "entityType": "User",
    "nonce": "0x90efac777696e7084340ee6ffac0d6bf9d4eed7ba5d2941e46758d9b7bbd02fb",
    "signature": "0x9740682fac1c926aef406e14dae0b1bea4b7ae450e86ee0ea4e6cd50df45b791604a1da2d5041b047cbfa4a1fd70e2faf8c5358136b5080921d4c345c77837c11b",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}