{
  "manageEntity": {
    "action": "Update",
    "entityId": "799571887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarl4vqlh2teh2xef3g4e3yak7za7tpnu5l2qy56jlbls74tzgnovq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":442302854}]}}}",
    "nonce": "0xd2e22ff52ba9a50e2a8d4f03f27c9f65bf74eb11a80f32a566cfd7a163538167",
    "signature": "0xcd2198a1b6c6cfe09b6a28e6f20aa071d945bc0b4460203cea661ed64eec7df807b1bcb0b06b6b4a3ea9717fa22163a90a6ee5eddbfb0cb747d235221058dfe51b",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}