{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "2129034871",
    "entityType": "Track",
    "nonce": "0x9cfebad43b8c1c67a12de28ded8b556e78babdd9303b935ae35d17aaa673f705",
    "signature": "0xc0272a62128224a2790ca03e4cf8b84a9f78f5915abc5edb35e85fce4199008e6a727addc785f70946e5f2f75b2dcf6d571071347e6f0854694574df7b7ef5261c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}