{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167807833",
    "entityType": "Track",
    "nonce": "0x2f83143fbf2f202ac04629bed97e8c25b919fe4e7c6fa088a656ddb174005626",
    "signature": "0x614893172e1bc0b04021c845ece6682346d93a6ffe7f16161839a3e570300e9b1764c3795f6e53b3b9e55781ab6a529ecbe01df8fa455a1b0e28788e412a84221c",
    "signer": "0x5d60d60f715755f8bA9dF70cf1Aeb780Cb10Fc1F",
    "userId": "343259028"
  }
}