{
  "manageEntity": {
    "action": "Update",
    "entityId": "281439246",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf55a8ed0b55ff52278f053c5322b2d97dfd2c7554799acb8d19feca21d0de1bb",
    "signature": "0x18484329f3867c04812ad33d8795f2af8728adb556c5ee83b5d432118d4531f104748a3d8853293460b3258f424351673964fb40e11f1abd07b9b8a715ae77981c",
    "signer": "0xF1Fe2D603444791D4C3f925bc1507D497BF6140B",
    "userId": "281439246"
  }
}