{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024055",
    "entityType": "Track",
    "nonce": "0xa29c3841f1233523dabcc2ef21498fbbb9c151f71c70faf5d9e52519d9a93586",
    "signature": "0x456cfc6e2563f3409bbe3cbb9796a0694ee63f68be1bfb4a13851959df2dea97219d3b10b58ce1c17bb68585a6c1dacd40d4ee5c6715ac626a294ebd22fbc47f1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}