{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "403911",
    "entityType": "Track",
    "nonce": "0xc53b1033d1fbb44a77ed972d84358c48a79e68b5beaa23eca9654739f460e67f",
    "signature": "0x74f886fab44b77871be3299f888e60fa6b774e31efaf4a0ab1ad7f2f05b8e4aa2eb310e81ab0d3836ba3d10687ddd028d3175896542f39d641a666366ddb2ffc1c",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}