{
  "manageEntity": {
    "action": "Save",
    "entityId": "11773576",
    "entityType": "Track",
    "nonce": "0xb2a35e1d04f72699e7f9ac5f4739a4febf95b60dd8a291246579ed49d00a2c65",
    "signature": "0x3c96c774856f82ce38cfa37bc762f8ad0f06be4b10d9dbb7e4062e1fe0d290124bd7de11304342ab3aa2978f5f985eda8039599ad225a55a5765f640e3f7410e1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}