{
  "manageEntity": {
    "action": "Save",
    "entityId": "251011932",
    "entityType": "Track",
    "nonce": "0xc079a2e08f431af40c472b7e5362d28f8f9b7067884d3c5381c3af8ee8b323b8",
    "signature": "0x38a684ea2ea3b5e33150257b3b5a5b0c90fcd35fa8fd5942fc7e07f0f1e5bf2b3959dc1af801ee7ffab4022c4ea5904d107437188c761e2fd860df2865e2db571c",
    "signer": "0x849938DF063059EbF6d907f55E72C083347C9343",
    "userId": "796529120"
  }
}