{
  "manageEntity": {
    "action": "Update",
    "entityId": "19820353",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbaed3719a3cc8a0ab754b519160ee47495e9f31ab2e24d17193082c358e95727",
    "signature": "0xe1f5ce1838a740c3f5fcee258ceacfb1101ee78ebacfa6d2041e4a3ee4ab9b1a6ae8d36ea62d22df806d9ec79375a14404b16829e879cce233e3945424e3e4541b",
    "signer": "0xA8C47FEFe4dE428e82CEFa489161d1A4bbBa9519",
    "userId": "19820353"
  }
}