{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "544293802",
    "entityType": "Track",
    "nonce": "0x210fa11c8876b249c6a3bfcd25e1eb07cb891fa3c8f2972a7961ac77b62d6b33",
    "signature": "0x545caf1bf4345ff43e22ce358418cd2169a9a5b3a8339a3bc3e4f45bf23a5938114fb1f5c996b558df58150629f6cc0f2f3b32c5758fbd0a89914bfc47a8933a1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}