{
  "manageEntity": {
    "action": "Save",
    "entityId": "1829425198",
    "entityType": "Track",
    "nonce": "0x15f1b4e0751688736d94433a569edf844c0b8991c03877f648b75b80d2ca2f5f",
    "signature": "0x0df557bd5d1bab880748cb232e914e8952db9379aedc9d6d743dd6f9efe6b96117e25e3ed8eef9476563321f15a5bdce417a4836fd127691f8c9ce339771c16b1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}