{
  "manageEntity": {
    "action": "Save",
    "entityId": "225527959",
    "entityType": "Track",
    "nonce": "0x3d628e4acd617a9ba8a6af65917c34d153f0b5b07023e672543ab2dea1f74e6e",
    "signature": "0x669536f333c17d69084ca3cfa95d43bf7a38e72db892853e08e17be32bdf54636ee422aa40dc6c0c08ca2a376ba301265432ccb2a26c8db9ae1bf18e68c350721c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}