{
  "manageEntity": {
    "action": "Save",
    "entityId": "126533",
    "entityType": "Track",
    "nonce": "0xd7ee9211d6f0afa0d8710692c6df9ea514e40645c6407936f08539cc8f9b4f01",
    "signature": "0x6a6ab39d7900e7e2578a902ac1b8601da7ed0d18e400efaec38d96ccb3ce420710ef1fa9093d0bc4922f7bedbedefaf4f78220607cfebd262f46a98eff416efc1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}