{
  "manageEntity": {
    "action": "Update",
    "entityId": "850164388",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0ffad830189ba713a624c068a339c2a1be2d27bbfe3d274a9e876a4a020348eb",
    "signature": "0x438ffc3afa75fe0efb526cb477b760dcf2907b4640345863f1b8157842a6a8fd3deb1debe371b2154ced0fce3152a57879381a06c41693ffddcace7d2426be7f1c",
    "signer": "0x603e7BaB44b5BaAd8BC20BeAf02211C3db340CDA",
    "userId": "850164388"
  }
}