{
  "manageEntity": {
    "action": "Save",
    "entityId": "406105",
    "entityType": "Track",
    "nonce": "0x4aee51cc4c99d3b2b2549117290c36bc114fe093e44dcbc3eead4406cad4718b",
    "signature": "0x284e7effd0c223a02f04594f377d2c0d5f8b2d1f6480853cec4696852b38bfab7fd71b7bf73357e19ae9407c90969f19dcf641912af4589d35d38fc34dc4ea051b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}