{
  "manageEntity": {
    "action": "Update",
    "entityId": "498363057",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x51aca6bf18eaa9e777378fdf0fbcd65d65da4806d46dc93dbf2a73a9655be827",
    "signature": "0x1cddb06158eb6b2ff8d952f6e3758e6b4ab806f817bd1f2d83313299cf3629ea520ca8edeef57860928eb7719702452e5faf29e05d8fbd42b6b27ce72f6e1de81c",
    "signer": "0xE5d53C05CD9E69F9cb1c543A1f012c5c445c6B9f",
    "userId": "498363057"
  }
}