{
  "manageEntity": {
    "action": "Save",
    "entityId": "1995362137",
    "entityType": "Track",
    "nonce": "0x97457c015e5d6edc948ab94b5e264edc7d82a7031109138bcd94d0f8660e1b0a",
    "signature": "0x4e70244383f8d85e6ac290e06d67ff6a8390a38cdfff2550fa718ee9eb33c49d440500782bb294ed3d7cc5ff2d6d8a2f4903b28c6afe77d36699b9f03cffbf151c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}