{
  "manageEntity": {
    "action": "Save",
    "entityId": "865400813",
    "entityType": "Track",
    "nonce": "0xc8dd71f5e7fffa55f4ece61e0ef0ee2f494aa6df6a6e569b3e4114daa1a513f8",
    "signature": "0x71b08be4b6369b4e742cf928dc6264bb6031106d9b404a4188dbdfba8e2e8f770531e299c92d5e518c4fdebf9305eed93c8a6acf8761bc8f82f92d3105c6f4271b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}