{
  "manageEntity": {
    "action": "Save",
    "entityId": "1700693094",
    "entityType": "Track",
    "nonce": "0x644f4ef10215cb65cea0550b040a1125fe17b555f78c6dabade36a131b0ee1e8",
    "signature": "0x32e4159595fba0f2ccedc9a88a30a2394dafab26079d02aec0f8b715318ffa242a4ed1ee32647d54be8924d0ac0ce7d4d8c32a1dd22e4924c2dbe4e1af9f2df31b",
    "signer": "0x443e60705Bb4473f37a5c0f34e9E1DDc452B4197",
    "userId": "532926441"
  }
}