{
  "manageEntity": {
    "action": "Save",
    "entityId": "2069349618",
    "entityType": "Track",
    "nonce": "0x3c2d0be7605502c1f370f2c2945c474217e07327a9258a779b63d3cb2e65044b",
    "signature": "0x91ff45ecf34868d57794267024c91ec708e895561264d766eb2770dd0f465d5e1a1cfbf71f7686f11dbb9e7699127a61f0a3bf4f86077a8cf1037d4cae7cf3561c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}