{
  "manageEntity": {
    "action": "Save",
    "entityId": "432928247",
    "entityType": "Track",
    "nonce": "0xbcad68b32145580a3f0df6e390492e6091447457eddb1b988e26c6abaef471a5",
    "signature": "0xc96095e54e0d6f0c240bc052cd5fd03b67eb0215860e108975416dfb2625a5515cc343887cd874e5c4111ea1cf2c8ebf01dfd7b3596b8270668ef316fce9f3641b",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}