{
  "manageEntity": {
    "action": "Save",
    "entityId": "935361813",
    "entityType": "Track",
    "nonce": "0xd980735d830c587df5fca59c386b4e4c175c1724c693b818d8e07d34c4eb8c7e",
    "signature": "0x4f0d1515c2191ac016bf2483c28787c4470afad8f1e80f9c55495d1f5179a8ae424a83f65cfab30b210052cb5baef0e24cb350046f884533499ef2749a7887cc1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}