{
  "manageEntity": {
    "action": "Save",
    "entityId": "101327839",
    "entityType": "Track",
    "nonce": "0xa25eeec124b0ec18ea817cf61074cac815ff8bd85c836214bf3a2d0218283df3",
    "signature": "0xa10a4072b2607447cf94683116b93f8861db446fdcd2cea292aef91c563d2029729c72e85c1f773daf52e118ef2e632bf75b8f4317119eb3f180756478e925371b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}