{
  "manageEntity": {
    "action": "Save",
    "entityId": "1419863065",
    "entityType": "Track",
    "nonce": "0x1dd2d6f81cfd57c4d790072d4826971a1abb4f1ec3a278b6cb4582017b64fcdb",
    "signature": "0x9ec8b010a0cce2a8e392ef75d52fcfada4910da49ef2d845911cfc7497d19dc2250d8d9b5b401f599cb8700a6b938d6ad2acc3cefbfabb4d2acb39e44aa623cb1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}