{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "487640022",
    "entityType": "User",
    "nonce": "0xfcfefe374f4765200bb7eeca86eff6fb0ec3de9ea2f9c2f59e3deddc9d7258b8",
    "signature": "0x44fc1e4a6f5b47d813dcf292fc7c67551c5dd1c18380a599d0418efa881a809335998c6bc77799fa92f13d5f32ce35ade49e6c0e744ef0af73c395b60e34ae1b1b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}