{
  "manageEntity": {
    "action": "Save",
    "entityId": "733812113",
    "entityType": "Track",
    "nonce": "0x8d89f7a2188839018d0fccdd3e2f011adb89af4302ca2f8036b6e9fb23044743",
    "signature": "0x2236fa3c93e89cce2c5f336ac3fdc8529aa1ce6b0199ef3b327314a88e10aead53e5e22cc8ca472417efd4178a8679ddbf0f1b989a743d068a3d3d70099166db1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}