{
  "manageEntity": {
    "action": "Save",
    "entityId": "1037186",
    "entityType": "Track",
    "nonce": "0x5ea080688c9bc30cb3549e048c963cd4117855f86c2d1951fa40884a9e31f25c",
    "signature": "0x885ea2dadca0b9e433cc8f0c3ccd9bff0d617518b08b5b6b745e935cdcd374b80fdc95a019ed6ce1db1ca0d56dc76d71be696b915c9cf166bc9c867c76fb2f2e1c",
    "signer": "0x8a278E79c8E7e655B94c3e6798972A44Daa2c6ad",
    "userId": "24098924"
  }
}