{
  "manageEntity": {
    "action": "Save",
    "entityId": "814306",
    "entityType": "Track",
    "nonce": "0x693354d0b5bfa87b1659df19a9d1457a0a4e29049b2be7aba7af354b6b05986b",
    "signature": "0xfe1805d763cf2267104808a8f1c77d1cf256ed7e92e2813f6f8ac6ad0e7e7e406fdeb9fe373e44d9a102bec0b90270a5b0df865a69ecb5505b28dd1d58ec71231b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}