{
  "manageEntity": {
    "action": "Save",
    "entityId": "32680175",
    "entityType": "Track",
    "nonce": "0x15c92bdc627508e5b84a2920cb240558ebc161b17abb2aef32189f1cf9541f04",
    "signature": "0x832545b65ddf4dd9a48e6e7db471f920a07441ff055337728709985f482275902e2c76c7c57ac769cdaf2524c38685005cc4722ffd75a7ec666af9852253a0111c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}