{
  "manageEntity": {
    "action": "Save",
    "entityId": "1030586",
    "entityType": "Track",
    "nonce": "0x5dd3c58528d1dba4b1f12a84caf9c90296cb9f963fc1bb7181eb25f9a82b9ac8",
    "signature": "0xeb282fa061b8681b94a6e867a36b34202fad549bfd071b9e7afb5ff32d469d7646be464ad9ab753ff5ba70da26640dd5804d147eafd02b1f63cbbd4c6e19f5a81b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}