{
  "manageEntity": {
    "action": "Save",
    "entityId": "34005089",
    "entityType": "Track",
    "nonce": "0x08f132afc525108b093e2d3a95f0fe4425256259b953966570342ddb5765e576",
    "signature": "0x8c01e2f5555969d349677f9180f56aaaab18df132edac629c29902afce8034653395130df48e328f991b552a161506d2531818502824a72c53aac789e303552e1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}