{
  "manageEntity": {
    "action": "Save",
    "entityId": "1955699650",
    "entityType": "Track",
    "nonce": "0xcb6f4a06ecd72a208bb2b3dc5966149c8e5c65e8ae8840cbee9d46a6e97e91b7",
    "signature": "0x7e1fb78f3cc2aa4ee29799a182c5e6d26f8c2497573fb92e3019545cc9b4f6927de095595ddf72c0847fb342ca0634ce5685d167ebe633ec2a2ed7705af571e71b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}