{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "670550",
    "entityType": "Track",
    "nonce": "0xdaf9af35834a72387a6527786a95f2a9d104c14be4c258d34b243d9dafe91610",
    "signature": "0xf3983d01d2614e8d6eeb45c3dd12370e402ee125e4d29d7f21c6425a3ef998ec03bae716e5174bb829461cfe139e19d87513908834c0b281553d2e12f6c6571f1c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}