{
  "manageEntity": {
    "action": "Update",
    "entityId": "51270411",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieray5rn7bfch4xxuwqy4oabhanyzfikaoue4cleoxqpcrnbnx7hrkga\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":87904}]}}}",
    "nonce": "0x1c60d7f6576224ab41a34950796a03f60d3b3f6d826a5a3195db994cd690fd27",
    "signature": "0x4311109cdb4a4669dd406c4a3b7e273876d402cf0c7ffb5ea0398cf701849bc37ef4d5f2655ce79c48bb1d66ae29fbfb85431522c0670e2f715844444e332f941c",
    "signer": "0x1F5b327b06F23985a2eB7AcDEE087c4CE3F79860",
    "userId": "51270411"
  }
}