{
  "manageEntity": {
    "action": "Save",
    "entityId": "1847668379",
    "entityType": "Track",
    "nonce": "0x3f9921e14540e23252378e0a5914fcd249af87f148bdb71f440fc3e26d017965",
    "signature": "0x540461e63e2e91f42ddaba873baae29aa03c8c337993f0f112808a7f91f8cd6e61e0b74a8b21a6f1ee4186f9230efa333787a27c5fbeec41f7fc63052f2f53cd1c",
    "signer": "0x0A6a63c365ABEe5D1635445fe85B59443AD86482",
    "userId": "698592023"
  }
}