{
  "manageEntity": {
    "action": "Update",
    "entityId": "43754840",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragymg427gtbantkximdbun7wffjg3xtc6tbj4t5u5scsbhrh53khq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":286830119},{\"type\":\"playlist\",\"playlist_id\":257689016}]}}}",
    "nonce": "0x09476f5de329e5667035e69f87500792e269ad9cc88512e4f9f398b2e7068397",
    "signature": "0x1927063ec9777335c652393b2074bed0aeefc74de640797e5d4b84786a5e9763770243a8e4e6df13c3b2307d4ad2961e4401feeb3a5bf1ab3ddf357ff07018fb1b",
    "signer": "0x6409f2D99228Fee0405Ccf5572802befaCd890f2",
    "userId": "43754840"
  }
}