{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "338074",
    "entityType": "Track",
    "nonce": "0x7384fa4b1ec1741390fa721edca047fc4c62c7c1a309b2b0eef22a0f2e658162",
    "signature": "0xeba36a239b42dd404b51a98342cc3ce6b2ba81ca1c3ad0ea313ebf0d5e0c85ee298b3f4db3924b256128eef95bc7920c9c6b606782cb25c27ff5da8b8aa9572b1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}