{
  "manageEntity": {
    "action": "Save",
    "entityId": "1752181087",
    "entityType": "Track",
    "nonce": "0x0b6e6ce4ec81e52d878dd2941ad797de2c586c0b655b4f52932241c3999dde20",
    "signature": "0x503ee9f03b6241bcbe7e1f433edcc09e4b226bf1137e56a83a9452fea0634f220ccd433c635051554f7603d34174f98613b5b280b5f032e4585cbf93eb446f2c1c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}