{
  "manageEntity": {
    "action": "Save",
    "entityId": "41193667",
    "entityType": "Track",
    "nonce": "0xf4e85bbdb8ace1ac3da4f30f1f5d220a2ce5dce5b3ce9835d642b658dafbdeaf",
    "signature": "0x87cb9f0b135bbb7767417cf1725796065394778f05d3036b22ad14b6e5cf185a52478b3d13cb7b556fb80fea1b39768f3e18bc45dfb91ebaf2f7b3b6fb8cf4af1c",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}