{
  "manageEntity": {
    "action": "Update",
    "entityId": "172581848",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc4f64e320beb611227ff1030e62d9efad6f3b49cdaf7b8a554734a745e96e3ba",
    "signature": "0x92deada24f621c0b87f96cc40b9cf1f143737e48a32e0bf0c7b3873a31015d57488ae6884be83ca799bb5f9b9a31827e98d0cc59885921f567aff2c0f5b65c061b",
    "signer": "0x89a6B1a1b823105476fE21123fb4A43700e8cf28",
    "userId": "172581848"
  }
}