{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "506236",
    "entityType": "User",
    "nonce": "0x9149217142a30032e4eff7f59768e52343d5a55a57fce792ea52211573e25f78",
    "signature": "0xa721acb08a0607d2a9bb3910d3936eafb632d379d181caf7a37ca6ab769404d24e3e952dae589b90356048f0f08cc76c6e887a03b6cee3076371a98244055af11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}