{
  "manageEntity": {
    "action": "Save",
    "entityId": "187671",
    "entityType": "Track",
    "nonce": "0x384e743119dc5278d7b0ecbc57fb20b6a37991aa5c2df5db176eccca159f3918",
    "signature": "0x14e2fa572b49e487de697e03ad2ea8092de603be29b0d8dffede07b2372b1a8008928c4ba6dfc55197bf45c4e3a6e75b919e1a2c4c279ba8c0723a60c630a67e1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}