{
  "manageEntity": {
    "action": "Update",
    "entityId": "690301336",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x20b6e80ca3ed494374a0faf3efcb9972291d9d4c94cd225abcb00a4730da13de",
    "signature": "0x858737aa5d68dfebfd358009f9a1f9bf16cd10b0ea62848106dddba35e3ed7016a83bd74c06af05ee5d33ef819cd122d755ed03ff71e4d98b841372ec10b44fa1c",
    "signer": "0x575469aeC38879f6875E4A873418767be2aC42f7",
    "userId": "690301336"
  }
}