{
  "manageEntity": {
    "action": "Save",
    "entityId": "1047009822",
    "entityType": "Track",
    "nonce": "0x1a639b62b8d1d5637f615b856a157732b6198492711f552b2265fe58c0b76229",
    "signature": "0xbf2316d66f56e04f9429c7ebf5a6086ef7313b290a2703366d5db6aa1947b6636a28dade0986379383401356844e991faf4b0af77f8cf626130d3bb43dd1f7e61c",
    "signer": "0xcF1BC458908F84936B19Ca8Cf67C751CD647B02b",
    "userId": "310796"
  }
}