{
  "manageEntity": {
    "action": "Save",
    "entityId": "317345",
    "entityType": "Track",
    "nonce": "0x89dfd093ed6dd44668914f61f49c0f7168b76392b8a25f371693e4e210836d9a",
    "signature": "0xb3efff44360aaa6f9db18e454bcf14ac4d0b66b24cd72859e4f7e8b2cae31a6f572c18f72bc74e5dba562df6c31ef5d860f38aa7118a55b1ef4700d33f8c38731c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}