{
  "manageEntity": {
    "action": "Save",
    "entityId": "561191647",
    "entityType": "Track",
    "nonce": "0x8bada5f9b480e732faa09efc416c2700bc6f18cce601b291ca4297489eba4b55",
    "signature": "0x71586802df97e792b52385564f38654598e64b889a0b96f723964ef689a3601553915990a1eb190d4cb2a4926684447e3022b341ce1a9ba4331dea7721e1e0121c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}