{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "533900",
    "entityType": "Track",
    "nonce": "0x2ce9ae471c2c9bc7f13c547b2538c4dc29d7f53c923e8098c82c24a032a02816",
    "signature": "0x0df237c7d246beff11ed71388d6679b32e5a934bba093e1acd975839d2dc4d696014e2714ac02d513078a4a1d3117085ac0af09a2d79507c75764fd361e688641b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}