{
  "manageEntity": {
    "action": "Save",
    "entityId": "1281310135",
    "entityType": "Track",
    "nonce": "0x71219a41229002c0e2e78e279ab3cddc8a1984133db0892f0f155ad08ac6b568",
    "signature": "0xba0ab25d216b55d9aaa2a6bf94d101d138405b2595cf407392b2b9bdd2f2739538d32e11ac48bc88f6158c2e9cdd30a3278ac6cb32adac5998cd286d1c12ea251c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}