{
  "manageEntity": {
    "action": "Update",
    "entityId": "668388673",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3eb5df8bc5aaadfb4214e3860bb3355be726e2e1043b1c931aa86d895564fb75",
    "signature": "0xcb07c4ae9398bfdfbcf8554b279df1bfa4a922c82bf4d7c2d4076ea2f0af6e89742ad47a438128ef5d8bcdac2a8d285f2bca7ff9fa87627231f09ed087a69a2b1b",
    "signer": "0x8494040f7CA6D76959aA4DB202859d635C23147e",
    "userId": "668388673"
  }
}