{
  "manageEntity": {
    "action": "Save",
    "entityId": "63197",
    "entityType": "Track",
    "nonce": "0x985dff01b9d4b13e54aded7690b05d389bb9a9bd1f3af965b8e13e4e302e4b2d",
    "signature": "0x17d23f134de4400175e7e293b962e4b2c55f3febbe0fdbeb44939202a06c3c7001d98dba08816469fc453c1a699212f3fbd7ab4767c8274fb722075ce10510a61b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}