{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c2bf300adbac498e8974f6a2b868266f178b315601bea83c529ec1f88dcf088",
    "signature": "0xd44a402063262ffc06669ad50a74636ee7d82025f8435fd5015d909291e6e929677bbc7d466138d312e4504070b2d602cee8e0c18d32c60f91abbeecf71a9dfa1c",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}