{
  "manageEntity": {
    "action": "Update",
    "entityId": "687066725",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4c51586950ea379ed9ee195279207a5922585e055a6d84ebeb4e2d03455575eb",
    "signature": "0xd0e92a23a294f928fc086d859ca35be2dc1fcd5bb0baeaa2edaf1b7fb338aca0025db78fd7cc3d62d8117853832016e48387babb5aa3517dddc297227f120a911c",
    "signer": "0x8A6d37Be1a08F1aaFB0BCc6ef8bea16935e6B39F",
    "userId": "687066725"
  }
}