{
  "manageEntity": {
    "action": "Save",
    "entityId": "2007486554",
    "entityType": "Track",
    "nonce": "0x7e3ba23ce4195a6f1ea8c2e6a4a0162061e9f79759050a6e6c2257be19f71856",
    "signature": "0xd9ef07376e6f259dcb742df9835e65536f50d15f80c5471641b1ef67e3d3e4e5333d1ba0c882bd05d376420c219b261f440086fd3f40fcda8b8176525ed67b101c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}