{
  "manageEntity": {
    "action": "Save",
    "entityId": "1481098058",
    "entityType": "Track",
    "nonce": "0xf96c99b43ff2571b5c5cfb6d42267317f6725111cb573df926752500ffc7ab56",
    "signature": "0xb134c0ffd39b455c1c08c3c580c9c30ba81cdb9923bc5de038fb48caa5332a270df7d01d39c3ee0d26075049818e6e1e82e47f4a99358dbbd3b198722334977d1b",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}