{
  "manageEntity": {
    "action": "Save",
    "entityId": "181890365",
    "entityType": "Track",
    "nonce": "0x96f7d8cdbb434c8af01fa52078f299e05f2783e276ea2d580caca36cb5db3c6c",
    "signature": "0x36c0f0a5c056e0c873362414bf936dd8652cac2d785b1af6dcd5f0ed5e2d036b196ed02e40233e329e5eb14c24176a44dfad933cd3a626e7b7cc1ded73228dd01b",
    "signer": "0xc03cf24b1C519dA6a18B6509c7F5C57d01620755",
    "userId": "870665506"
  }
}