{
  "manageEntity": {
    "action": "Save",
    "entityId": "1061843",
    "entityType": "Track",
    "nonce": "0x4f0e77f047375b386ba586feff2c65d09a1819d904150693c81faada09396da2",
    "signature": "0x471311bab6bed65509047eddf823be3bef1ad4492cd2fdf81a3000f3e9ce033d63934ca042d96e6fd8211b1a7b9cbbeec46720024ff80e2f7e8d9123b5aeb96d1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}