{
  "manageEntity": {
    "action": "Save",
    "entityId": "809565",
    "entityType": "Track",
    "nonce": "0x6964dfb3da8d83262c33e627a1754dc9441a11eabf22d0bf680ae7c46e6e7f9d",
    "signature": "0xd6271b40e3c98ae5d691074565b840e761a4ce53db94c70b4998111b4716b0d444c3a179defdcd96c8a25c503f8f181226ba477a04ed999851c37c93fd6429671c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}