{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270766927",
    "entityType": "Track",
    "nonce": "0x44d85206ba721f0b4b8ef06a2256010775d063542175c51a159e6a47d41e804f",
    "signature": "0x667f459075275b5d3dddc4d1640e0877adff400850a42bb03243912c80804e7c63b0d81292d281f496d34a6ff4d33207e1845d9a467acaba81cf3b8fb094114a1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}