{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1491129",
    "entityType": "User",
    "nonce": "0x05f979373f6fa37749dfe9dd8655b556c180e684b3903c390c25f82dbb9b2bc3",
    "signature": "0xe1adc774438fd214949e0ae1a74f12cdeac10283b6682d97a0d7801a2d319a615cd5237e4b2a048ccbc7a5ece02770626394a659f3a4f6c91870d0d08cbf640a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}