{
  "manageEntity": {
    "action": "Update",
    "entityId": "75683930",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3bc3390a816ff3d51ac9484eb96396bcd6b9f2690f35195664f9ea10328a4114",
    "signature": "0xc79e3a69d39cfeda4d8e8dd318c8131eaa62df6218097169da3593659c94d69b2637e5feb259aecbf1f8f7ae69aeffe5bb6ff02b2f13d21f6cb206f44d4e926d1b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}