{
  "manageEntity": {
    "action": "Save",
    "entityId": "1435810062",
    "entityType": "Track",
    "nonce": "0xeed598345aabcf204b55e890f5814ceb89d410dea6b23a9db5500a208d443315",
    "signature": "0x82b7bcc1f65b44864eaafeba349adeec30a0b2081ebda672a3e1cd305df0e2a66b82198ea8af23f077f8e6a86de78ac288b2d56646ac78f2496abcfe1bf264a71b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}