{
  "manageEntity": {
    "action": "Save",
    "entityId": "1856231165",
    "entityType": "Track",
    "nonce": "0x006599233e3ad7c464709b368b67407cf4aaa504e0cab6e9cb5ff0073aac85b0",
    "signature": "0x37249c363b5ffff191a934b9a230f8a4873882f56a2768e2aeaf5a2aad2412011389a0f12b5578bcc114a345cc529c2da859328775c9aa0b19f8cf2703e676541c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}