{
  "manageEntity": {
    "action": "Save",
    "entityId": "1931163986",
    "entityType": "Track",
    "nonce": "0x89ebb2a8de62f7bc352cdb1c24b236e7e5edbc89edc3abe92d9a52eb6dd4fae9",
    "signature": "0x1f57aa88742d8c5877ae7133abd8cd86319c7a6ecd56cbb65bdd9324fbff2f08082bd37d651525a79c7df88c28af4eef16eee10564defc073a96a33ec5502c541b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}