{
  "manageEntity": {
    "action": "Save",
    "entityId": "275366",
    "entityType": "Track",
    "nonce": "0x589af6d447351c968268794fd06be40e7e440e9575243003d53e2861781e3ab0",
    "signature": "0x056e69cc74a2de49937d559a65c6335b68b22055803f8fee0f79704e460164974bd13dcb85642ab926c5c49f12357bf96c2b95a5775545b6ae25127d04943ef11c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}