{
  "manageEntity": {
    "action": "Save",
    "entityId": "1275546307",
    "entityType": "Track",
    "nonce": "0xa82c1ba73cc2164fe9105df3d165b75094f13d390e5f07da72f66c833f39385f",
    "signature": "0xd1fd841362f3aec354a6e531a2f84c50c58f41d17f4acf66797cbf54e95c9e7e74bc0d7c6ff022b29f33af7f772f9fdfe8ad2b9b2a44accd5bdf6f9ccb0faa6f1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}