{
  "manageEntity": {
    "action": "Update",
    "entityId": "899724207",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x548451a2170335e56324ed23ea57ba70d80333ffd1dd8350cdff4f8be19a577f",
    "signature": "0xb25ba464235cb689a22255b1d1e835148d74b9cc9a88533db8a91a2ead30910606816def714c3667c4c7aab0695fa74bb09c04c2f58324e6edaa60316df84d051b",
    "signer": "0x55Ca96919B1a0a44c9e552ccB87CfD04cb5FEd9C",
    "userId": "899724207"
  }
}