{
  "manageEntity": {
    "action": "Save",
    "entityId": "24900",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd107ddda8e6199cbc565c9481b55e4744d00cc36bae0884a7c024487ef684151",
    "signature": "0xd125e0ca395f4d08cce319da7c0ecc04277b993387f05255be17fe57c21f268c54f3373a95538456931c5528f94666a3408a6e47df4a0dbeb267ed5f10dd5af21c",
    "signer": "0x7fa4BF74B3FF360D3C3b966AbB1B083Bc6fab6e6",
    "userId": "167096004"
  }
}