{
  "manageEntity": {
    "action": "Save",
    "entityId": "376306064",
    "entityType": "Track",
    "nonce": "0x25ece77ef6f2f5b34825f29e55bb5d721d15f6086e62326e2dec3668f2b83477",
    "signature": "0x2cda01be45e6094062425d29c5de0097b7d3973f63161c4959c4c2cd5f60f82f0562b9d082217445461dca33644988f4f49768fe6bc516fba409ff77b767c3131c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}