{
  "manageEntity": {
    "action": "Update",
    "entityId": "404263867",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4f8281539f0ea7c4e04b06c4eb60661d3aa6f70874210f85fd8332a1a8beebed",
    "signature": "0x70fe812c92f49ecbd5d1f61ca0dd6bd493a6c61c957909ba2837e3f4051be0fa7b781c9666848e647a36cd40ac6f24ee705c41c0c3f2dfe415ff1c9d79fcb8351b",
    "signer": "0x4f2dc1992AF074e0e00A5C85a6dEcC307aB95e15",
    "userId": "404263867"
  }
}