{
  "manageEntity": {
    "action": "Update",
    "entityId": "305884662",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x233d8c3edfa85dfc15946fa17075a5e30cafdacf81eb5af2137ec2560382a5b2",
    "signature": "0xf7b72b6f13a2cefa2098922f02c6d2c12616665d2a629554fdeae91efeae79ab4378099c3d346b9a2f406fa782218c79a35f9d987876368681a9781023d92df11c",
    "signer": "0x21ADB7f97E1a46192A5d3230E20306b7b899bEBA",
    "userId": "305884662"
  }
}