{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1357326957",
    "entityType": "Track",
    "nonce": "0x219577bf2b18b61df3a8aa604816ba3b8a286958d16b21e6a284a1df27b541d2",
    "signature": "0xacea4fdeb166c3d415e5ab26f4213ac051df27ad1f6435ee987603b2120e4dfe17e499a9d35089f7dd35b93014b2b6225e17fb6cf14d26e38c2c9449da6793881c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}