{
  "manageEntity": {
    "action": "Save",
    "entityId": "1828327883",
    "entityType": "Track",
    "nonce": "0x2ea858d81f606aa8670cf6fb5bed943639edb867ed0a911119b8eaab7c55e6b0",
    "signature": "0xd2742709d6bf21d9e48c8906657c6e22fa068483184e200bded7c38ff00dc73b25e1517673d291b2286d07396a3087c5aa5159acc23f5938ea7657d429002df51b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}