{
  "manageEntity": {
    "action": "Save",
    "entityId": "822155535",
    "entityType": "Track",
    "nonce": "0xbdb64a61d7b11fb73da492880fddd7714e0aad38e83a3451f2141c662bcc0a81",
    "signature": "0xfff1c755b8c2e42fa98ce571515c820c624d010d424968683a0038c8a9608bc428e5e8d6b6066ee8cbbaadb03e8f402fc4ad14d24ca789ccb30c35f5f7c351141b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}