{
  "manageEntity": {
    "action": "Save",
    "entityId": "1083224",
    "entityType": "Track",
    "nonce": "0x423f21a128ecebdc49babb018faa225692232d1e55debbd877d7b6612b2609a3",
    "signature": "0x6f2007462da4192ddb9f83fcd8c034bb45858f61f20a9896d3658fed7bcbb8606b5999fb998a18f76cb4385aa065dca82b885959e337d23b41994dfd13b68ad61c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}