{
  "manageEntity": {
    "action": "Save",
    "entityId": "327995",
    "entityType": "Track",
    "nonce": "0xdd487d696bcf93c67c80f52c1d2be71d2abee0e22e2e08766aae500fae5318bc",
    "signature": "0x2e1f1aafd7524fbf0f0c0736dda82fc70ec4f1db2fb86659a6641475d554014d7decb051624179995323f3e6f26b692446d6618ebf643340280b4ab7703b95f61b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}