{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x18ba73838d01e57215d50ec2cff878f6ec0f406fb0511ad87667804db37df696",
    "signature": "0xd2948718216f9a71b4760b048e4c8bcc6bcf9ec6d215182366e8a0bfa68709e81fdc9ba301c417ae1d48aa41b09c2b036720b8cf6f94f91d7440794b458de1e71c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}