{
  "manageEntity": {
    "action": "Save",
    "entityId": "1041477942",
    "entityType": "Track",
    "nonce": "0x3989de4521b4abe3e681ba802b1699b313b9a3ccbc1fa5d5b71b3e74d2dab78a",
    "signature": "0x1d044e784de32b00b50ed70c298da86492172f5f3985adce4c27ece1c05217797522bb7e21e58f5f242e9defd83e72d94da60dcc163afcd00dc1ca7d6369c6281b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}