{
  "manageEntity": {
    "action": "Save",
    "entityId": "1117193673",
    "entityType": "Track",
    "nonce": "0xe9656986f662fde9ecfeca6c04d0040a184e48cfcc550a1347cb798903ce630b",
    "signature": "0x79581b90a522e45564d18cce8227798f26368056e2788e7c49e0446d974a9f170c83721c91e29057b9099933e990d6774f606a5f2e7fc4f317006dfa6822ab851c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}