{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "252054",
    "entityType": "Track",
    "nonce": "0x6782c4887dbf7ed34b6f2d809ddf72d342c4169e3c5cb0f8e2c1f41f2b35954c",
    "signature": "0xc2a9982a83978847b054d030de1ef09746dc342ccd4f1e60380daa4566f830694794d8472a077af7e9bb447b12b7d88056668f6d03da48e76901f39be12687411c",
    "signer": "0x3426eb7db5d91c9Be99709aAF48ABCB8Bb481A82",
    "userId": "345944147"
  }
}