{
  "manageEntity": {
    "action": "Update",
    "entityId": "450369035",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5e50a7ef26d7a8c9dbe140139b907f1c2ea2a9c10a48e359ef36952c32bd718c",
    "signature": "0x011c5d8a04e50aa175322d47df1e7089ba15323f441ba29001ecf44e61f8dd0f30fff97d579a76d70fbc030375962a2a077b133ab564914ac80d92d04978d3991b",
    "signer": "0xA4B0C175920655a227577F59B8b7d134256B5386",
    "userId": "450369035"
  }
}