{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x08b8df63a4e269f1ab84c85e0caff28f348dce06f384eec220b1ddd46fefe68a",
    "signature": "0x39b519cf952d5adb9cd4316f35cfe80f100172e4647f488cc2c2348bcd12fe1561696dfe415a02fa5e2e29b4e08bd52c9162f3840c4e627ec2c260989de99d2d1b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}