{
  "manageEntity": {
    "action": "Save",
    "entityId": "1932272148",
    "entityType": "Track",
    "nonce": "0x6617ee3ca82eb65659bb8775d5be7bb4389a400d5be9b15a0bbcfd57b179ecb8",
    "signature": "0x258911959a95434d0aa0c38c1904eadc52b9341c7cee67b70022475719443623644af7c17176ce1084ef99631fa6cff70d3b8625c1b9219daee52f2f48800b3d1b",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}