{
  "manageEntity": {
    "action": "Save",
    "entityId": "1931775536",
    "entityType": "Track",
    "nonce": "0xebe28fafb27f7228ce28d2173810de7c2f757e122e5c09f892d20338a9bcdb1f",
    "signature": "0xc0d4119f5e5b2e3c2452a35f9b16d76964ea58585e502df88c6c10ca96b7925e1f40def38de7f1fc4a330b1e990b2d6f150989d6b80c57d9e9e1a47f39e725f31c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}