{
  "manageEntity": {
    "action": "Save",
    "entityId": "1732256994",
    "entityType": "Track",
    "nonce": "0x5c68e2c41c515378268d3da5b54732ac741d017e1ae4a175311806df4527b02b",
    "signature": "0xa12d8d57beac694ac4294f78b129dd5350dbba872712e18d78e03f9e65624862122ab0ae5b1ac0715fa971a842e5ccc381063fb4a4f145671ac399092a20460f1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}