{
  "manageEntity": {
    "action": "Save",
    "entityId": "1100463853",
    "entityType": "Track",
    "nonce": "0xc00b73cc9c236de0d80b3c8fddfefd5513e8991ed7995b4030676a37b662e9e0",
    "signature": "0x517dcfc8beb61cf016313ed1cf09af86e411d3cf03947a5790a0807698bd971e2bac06127026460e39f72b50e1aa5a4a9e41dcf19af63e1b78bcba7c083076431c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}