{
  "manageEntity": {
    "action": "Save",
    "entityId": "425219005",
    "entityType": "Track",
    "nonce": "0xb18db6e09c3fc86285183c0b1b10e388ba4f7b1986eb099ea08f4c12f2322f44",
    "signature": "0x585d1370671a0cf2f6c791867a84a29d6d63733991ccb6926e67d127d3e521bd15cab13a78af65ea2b7c17fa0964c58f428a65979166581decd9fe844e0eec481b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}