{
  "manageEntity": {
    "action": "Save",
    "entityId": "586319189",
    "entityType": "Track",
    "nonce": "0x9a07d3d36409da7b0ce0ce3d241bcc8e09a71722cbec815c5bf96974a5eb35d6",
    "signature": "0x03e4de75d392ec8f59de1e2dd02ade8e1b0baf2aed688b20f243aa8002f7d45f07094a34e86bc9344b1053c04cd72c37d5c1bd6f5ffc74d4035a0cf6a0e97c981c",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}