{
  "manageEntity": {
    "action": "Save",
    "entityId": "2062206590",
    "entityType": "Track",
    "nonce": "0x4127f14095b78dbee8f78a1fad4fe5f743bf77dc9ac6b0ce3fcc1434a6e31639",
    "signature": "0x8a0da6aee53095d1a4e711a998ef28e674f5b0b1b9efbb1e311e4768066523f244c6eb93f2a7d1c8e8e15a3414563d065582011a1659b5902f3512e03b9990171b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}