{
  "manageEntity": {
    "action": "Save",
    "entityId": "1726756892",
    "entityType": "Track",
    "nonce": "0x58fd162c008329cc1a9eacc2a5f95383446402c2dd5688651f631e93ce995073",
    "signature": "0x2605ee9c40a8f71a4d5e9ef08678cc51772cd5ab6410501bc52dafa97695d0400aa346255b54c9404327f3fed7f995a0b71a26a2e3559c5d534fa30fd85375db1b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}