{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078204",
    "entityType": "Track",
    "nonce": "0xd9cae156b2f0709f252aa89e957cf140454a2f73227ac252d339966b5feef595",
    "signature": "0x50575e3c402ee59fe5f2ec4e2f50f29ba2f6ce53f1b5860b2ecde31865a4850a4dfe38cbcb13b195bd312eee997135afe402d3ff8917f45dd8086cb6840b3d5c1c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}