{
  "manageEntity": {
    "action": "Update",
    "entityId": "890696251",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9768e6cc25a0e63c370b7f5f8e256107ae0adc568bc064bae653db30a55310d3",
    "signature": "0x0a7142acd128d80fa0be9f07ad96c092ae0f1eb0f8e49cffbceb13ffc49a2bb73f8d79163d76ab77c629221ef293c858370e712df8d66becc28806632314a6d31b",
    "signer": "0xf794D3d12F805546B3437B9f34deacea98B21161",
    "userId": "890696251"
  }
}