{
  "manageEntity": {
    "action": "Save",
    "entityId": "2103101276",
    "entityType": "Track",
    "nonce": "0xc3ee2c419a9265d7d536ff57f0a6b40f2810f278001e329291f45866af7ca8b1",
    "signature": "0x6739d078211653d36f0f34198ad3290f071359af6ba31ea7e7c1e7b1c55d54457c80c6b826309d453bfc77de297d01fb72648ec200a8b114928e347875ec8eb41c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}