{
  "manageEntity": {
    "action": "Save",
    "entityId": "1260186406",
    "entityType": "Track",
    "nonce": "0x69eb9c3e27ea93586f2da964625563109d15f314e70e390f2659c71121b8131b",
    "signature": "0x5931e9d6f3887ce9c73d0f56399f0ecdfd75e902d0d2aef280ac38e4dc21aee07d1824e7db6d3e8c6d472a3afa2c743fb30fa5bba65030a4c98085b878a3e5471b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}