{
  "manageEntity": {
    "action": "Save",
    "entityId": "1801150587",
    "entityType": "Track",
    "nonce": "0x655fc9094e4bfc16025395d98d6b6541890dc7e8d3a24c22aa48126b0c0e8b84",
    "signature": "0xba4a88539f8bf45d9bcd9c5de62d587af970dc04ff2c584a2fdcdc5fd2ca652d73b576e9a111a1f8a0c8a6b471d20f0b282a25ffe08802f333573b3f9a373ed91c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}