{
  "manageEntity": {
    "action": "Save",
    "entityId": "94226281",
    "entityType": "Track",
    "nonce": "0x91bc646612228652b738e7defd600a34ba86f5154c92567508714dd376894ea8",
    "signature": "0xbfd944c2877f4d2d459b2d45a188ebb416fc64d5fa880d3fa77507867f35fb5d61670538e26afbe3a5e2ce4fc34a666997800fb985e2b07079fda8164b5815ce1b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}