{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136127",
    "entityType": "Track",
    "nonce": "0x3a9c90c1baddb91cb829a19e1189fa840ef5000c0696214932ac7d96f8e6f09b",
    "signature": "0x10aa38d4d991ffe1fe949d0ec582d280193dfd3e2378a08e98d72474f2a1d0f915e122b173e47402ef0dae74a02fad237b7b72aa8fea237c193dd638b2454eeb1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}