{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "502433",
    "entityType": "Track",
    "nonce": "0xec9ee4775832b42c25995db2be35aaef081cc9e4209036f612e549b91e94485a",
    "signature": "0x578388f7d26f9ddba77927ce14a11db9e67bdbd8167dbee3f33dd817339583d839fe2a6ab7b4f0bafec02eb592927b578ae6c3b7f98c5c9840d2b0fc9efa1beb1b",
    "signer": "0x77Ef8B2640B796de01eF7b2e567969C8d2604e08",
    "userId": "55592"
  }
}