{
  "manageEntity": {
    "action": "Save",
    "entityId": "1715627059",
    "entityType": "Track",
    "nonce": "0x44259007bac2686a132a2d80d61b546cc8c37d02712d9b9fb8dc81ff32622142",
    "signature": "0x3a67c94197715619fb001e8e2796184af4611977c05eb529fccb4976bf8f0ffd3164a1ac2e3c49b6b2a898037ef55b44d221b384247047d023088352c8be2dbb1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}