{
  "manageEntity": {
    "action": "Update",
    "entityId": "620440719",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3edb2eb08a4d557d6f029762d80687ec66d9cec6406ab0814c9b24bc26ebbc8c",
    "signature": "0x057e1df4addb54bef7fd9c25e3d01705307d4a9ff5ec5a8488a8c10567ba77dc7928fdd56db628dc3a9d5720f0bc22ca61dd5f7c12a9e18de04709974dae46ab1b",
    "signer": "0xc7Fa9D9de4Adb976dEa68BCaDE8D5825D337ef91",
    "userId": "620440719"
  }
}