{
  "manageEntity": {
    "action": "Save",
    "entityId": "59180",
    "entityType": "Track",
    "nonce": "0x469d860baa52b0e55052effca812150ae58fa0b71324d10dca00ba37030a9826",
    "signature": "0xc06ca914c617dc28f4924fe12ce448761b36d3416cf4785004c6234dd21b7e150c7c568dda8c5461ae62afb1f4b6b81a7471224fa75550962416a6d47d2307f11b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}