{
  "manageEntity": {
    "action": "Save",
    "entityId": "586817677",
    "entityType": "Track",
    "nonce": "0x192ad15cc6d05ed6df7aa94895c20be121b2b541a093947baa5a7acd2476bc7e",
    "signature": "0x4ae0bc5a62d34e3648a321e2f50a361187a6d64307c92a3cf02affd0ffa77fa31b327ab2b7c0940f3f1c73de5f0d80adbbb2f0da9aedf95b3683def276a1646d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}