{
  "manageEntity": {
    "action": "Save",
    "entityId": "1103938",
    "entityType": "Track",
    "nonce": "0x27152f9b40d29165d4e800c8e523b2ec1616bdb4cb6bfb30d61bfd826b0a93ad",
    "signature": "0x06bd7cf2ded3b6dea143fa21db8d9abe41c6dc4cf3dbafb672f322388e9d22511c3dad36706083575730eacb62d9cbc7fbf5e1ae55aa2506c818817fc7bb90ab1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}