{
  "manageEntity": {
    "action": "Update",
    "entityId": "760590347",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xda1219b683760d24ca59a7a365deb01b81d53e9192371890371edc1a68d95b03",
    "signature": "0x49aa436652a3755a453f6c356a1191d688ad92af101cf90adf767564d918501171d655d571b5724e10556a518e6d4b3b63ea9a3c74212a83246085609bb699b51b",
    "signer": "0x647b4d92430FbDbee6b3d0903c55074CC13A1391",
    "userId": "760590347"
  }
}