{
  "manageEntity": {
    "action": "Update",
    "entityId": "187601416",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a1f0cca1cb7578f134bcc58a7a79a592087304b429e7584367c63ca40813113",
    "signature": "0x61cd6395485d134f2cae164c8776dcee60b40fbd10ef43e32d43468c4fc559d26590b41c1c26063f514eae980ef4b8855ecba09e515ccce502946d7015f76a1f1b",
    "signer": "0x4a694dDB300B15BF463A01A0123B6B9Fe0252a1E",
    "userId": "187601416"
  }
}