{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078206",
    "entityType": "Track",
    "nonce": "0x6c4533d3598144255e85e94104afe81a7f9164a21e31500fb1228e120da2bdfb",
    "signature": "0x5ba145a8519c4976b58b425aedb8dd381ff057f2303e2d1860af5db409bae3fa5a78b3ba06aa0af28cbd7469d5347953e54c1b2a1ad110ece38063711e3669d21c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}