{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171062396",
    "entityType": "Track",
    "nonce": "0x2d626c3d0ad31f99351620d1d3a819a7cfa7db9df584e5de95018ef1afbeee72",
    "signature": "0xa4decbd414c25345b6c5d367c189d15afea6bf085990681551746668a1f3b27e7dff599097e16115272d0980d153e1a334e7ee6480b2cc991a1bc1eb285141fb1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}