{
  "manageEntity": {
    "action": "Update",
    "entityId": "946701878",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa1e4b998bb48892fa4b5567a7b2440f775beb55accc3eac2220410d342911f01",
    "signature": "0x4b7d0ddd9187d54c3fc33ad1faf98c5939f4e6f3be09cbabb006f851cc904fd2517bf65626a6a0591b20c517032adb513b63a11a0eacf6629b1d4b4304e6d6b01c",
    "signer": "0xBb4808d1F012836c9B892286a313C6c6eD6E10e5",
    "userId": "946701878"
  }
}