{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1816747785",
    "entityType": "Track",
    "nonce": "0x85a9977003e7c9e7f2474b04204ca61285e08f9ab763761751823a947c9206aa",
    "signature": "0x4e323dd8ac94191f029eb652d5e4cb0b81b84e72149fed155db2dab9ed17ccf11e3bdec531602212046034c4d7a0caa832aa78727399246256756d8c1c6e49a31b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}