{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "400197270",
    "entityType": "Track",
    "nonce": "0x88911d4e7cb1327149b70792f574437f0213d8ff3855e19c4ac0d1967ccf4fb6",
    "signature": "0xfbf9b6ad234d90a806e541bf9dc7813a40f9fe40e561473d47cd3912b9a96b7a1a0f7aca2352811ed672b1e1cec81733136c16ccd4cf2d4ede779cec010610851c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}