{
  "manageEntity": {
    "action": "Update",
    "entityId": "458302619",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdaa3c9923177765620abba06b68e4045d7c4ccac188ec7c9ee37bd8a7383c0bd",
    "signature": "0x20d4673129b1a1528b6e82c2ff4667181a74422ea235e8503354531a326e74ef42ddaf663027ea785469fe178ceae4a0bfde6983a2c6b06c86aa84d5da414b2d1c",
    "signer": "0x31fdBb0E5a7aAAe160b470d8DC722F86D8fDA857",
    "userId": "458302619"
  }
}