{
  "manageEntity": {
    "action": "Save",
    "entityId": "962999223",
    "entityType": "Track",
    "nonce": "0x5d96dde7967e566b16a6344d746062a248b62ac6e6383e87346a269483f80d45",
    "signature": "0x1e0dd01a99662019fcb944ea2020f173a24db42fc4cf816643a57d9b517ece11117de3dab9e518ffec219a7312afcec482dab0a77251947b1c209cef277588bb1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}