{
  "manageEntity": {
    "action": "Save",
    "entityId": "1300980140",
    "entityType": "Track",
    "nonce": "0x313b8c1ba7793955adc9e61814b7156f34cf2062ef0ee7b348dd486ff025f5c6",
    "signature": "0x9487db6f55de0492f344d86936c9012aa98fa54cb57e705b99cd62ad510a1297138ffbf80bf263c22a775fbb7f9005163c7d6a57a83c326d38d75c34020802ce1c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}