{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059313668",
    "entityType": "Track",
    "nonce": "0x1c2755b24d1b11a626a94a635418e364da1b4b053ed777a6d803a47881b7e2ed",
    "signature": "0xb65497deb12150b9058a55c8704522055f11b9e8b59538b9a72fb27e312d65da12710c9d0e59af9c38df70a79ef527033a66f708291ce9bc04ba10418567d8a41b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}