{
  "manageEntity": {
    "action": "Save",
    "entityId": "103828908",
    "entityType": "Track",
    "nonce": "0x9dd0f6f86f3f89a3d09ab38d3ea8e3ddaf3b713ef69fa6d7e3dbda1a3ccba078",
    "signature": "0x61bce32d620f62d7f33302ff84b54bd8dcbfacacb8f6bd7711e6bdc6e3a6b24c3878551e6ca6d15c36b2497192047e8db1b100a7188ea806ade1e99180fcb04c1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}