{
  "manageEntity": {
    "action": "Update",
    "entityId": "60008468",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x81ed067f25045d826294a57424c3f1317ee9c3dcc80aac353b4a20491d2f0011",
    "signature": "0x3fe57dda34f6962c19e61ec77626463ed8d62e6a49f837bb055f45bc41ad7ff826a2ffa4a3e1391526c791b84df1cb480f92957a581a21877722c551b995d58a1b",
    "signer": "0x4De48fE1b56fD037B5cb86AB17ca457Db6a575eD",
    "userId": "60008468"
  }
}