{
  "manageEntity": {
    "action": "Save",
    "entityId": "1046870857",
    "entityType": "Track",
    "nonce": "0x7de9af2dd9291c83fb9c8160314d54a3620d2c3ff3b7246cc6a33aea82e604d4",
    "signature": "0x8f01f53d6efb6daefb7eba01568a85c1ba8efee0023ad048987378c841083dc925e2df02a6ec4e47b4320bbdb49a6178c62b79ada2592eebefa8b9fd61f904a81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}