{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009000989",
    "entityType": "Track",
    "nonce": "0xfd6590fa33b20fb6b01957a2ad692f2a3bfe80f349ad8677721d2a986fe5540b",
    "signature": "0x7855ed5f673c6f82e0419f1f6afc1f9830061e0415ea0eb82136a0bac6baaab778174650ffc9a8ac40dd55d0aab74f01c8627857d0c2f50741b8821ec70cbcef1c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}