{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "437545626",
    "entityType": "Track",
    "nonce": "0xfc359e13bdbcbcc9a1f0f6adc34dc39d6a60cbc52a8c0f38437f4f2e695b1943",
    "signature": "0x9fa542c0e560220bbb05a67fb9a2efe5922a4343435a3c66f68dbc7052def8c77c84cb7cca0d1b71e9e022dd73da0bfc33c725b627207936610907c29986dfe21b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}