{
  "manageEntity": {
    "action": "Update",
    "entityId": "687531608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c6104356608cb0b469c88b8cd04a6bd9bbb589ba1f7397cb855621972f24c16",
    "signature": "0x4629d8125be74a6571fd2d06606128bee372871fe0e2b521eee77190e89e870d08d735feadd04105ab9153aae0e2223d98cf4198b53dd18a93434f198f2c8fc41b",
    "signer": "0x8e8e80a44344650671A8bcfB256A7D08Fa29BE69",
    "userId": "687531608"
  }
}