{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1407071757",
    "entityType": "Track",
    "nonce": "0xedc07ae67535610bba312e58593afa109bb104a3d1fba6c4533c0a2de45a81d4",
    "signature": "0x73fa6abc32c9ffab2dc3d158c651db79254a9e8e05fd0a0fb46a6e10ae1d47792d6cf6aaca6928c4d2521e9f74e9b666bd44e4913a349c528532c6d6391607351b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}