{
  "manageEntity": {
    "action": "Save",
    "entityId": "1316699369",
    "entityType": "Track",
    "nonce": "0x0a31e19df33d49427656387c4a3ef319a91004cb8287107a0026d95ea378c1b0",
    "signature": "0xd7b2fa62e1aa185c933a95a7ae4513e108787e24a4b32ea0c2f94cafbac369ef55c6ac5a83d920e26fe77a94f3823ad9aba9a07e18ceb288bd27d73106fe59671b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}