{
  "manageEntity": {
    "action": "Save",
    "entityId": "1790455962",
    "entityType": "Track",
    "nonce": "0x8c9473e3a004a18aba25d7de76d89d8f5150fb5c9da24cdfd01b20948dceae5d",
    "signature": "0xd07c4431c1260c66d60aaa9ce6bf4404b3cf434038c5cabc213081d299688d0d693c3e172c55dd7bda2f565d92e19735f8dc0b025a4ba6ac5121ee5a604fb16d1c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}