{
  "manageEntity": {
    "action": "Save",
    "entityId": "1768792081",
    "entityType": "Track",
    "nonce": "0x67e2e24847ea8d7e10c3bb503c0b6bb0db8c716b30bf488c178256a1aacc6702",
    "signature": "0x4be9a6c629d301ac3ed87cd1ffb6cdfb4d397a0b450ed97481b066161a1816d92a6418dc802c69bde822878ffb00fc9e14ec666dfc7433ad11cfd4b49606e09c1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}