{
  "manageEntity": {
    "action": "Save",
    "entityId": "1180998825",
    "entityType": "Track",
    "nonce": "0x4393fa4450e9921dde13522b963e35463298429809dd5ef8067cf5bb0e00f01c",
    "signature": "0x8236bf4eb74e594353e163359bd958e63c895158ade364b0b9d4e67defc876686be96b4efe3c1dbe47c4457ffbf6eb535ce91f0498165d2758040dd198ef10d81b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}