{
  "manageEntity": {
    "action": "Save",
    "entityId": "1432701641",
    "entityType": "Track",
    "nonce": "0x9d846d912a1a3d5e68680dc1f44cd3e0c1a101e28d5e8ffa4fc2b052603138d7",
    "signature": "0x9ece1e8574dc64776a3aee78d30c1e2757820fadc8635172d4497ce2683473631021fb7eae3a4c283d338139a3505bd3c6964c430da167049798101fec2e837e1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}