{
  "manageEntity": {
    "action": "Save",
    "entityId": "582176914",
    "entityType": "Track",
    "nonce": "0x53a03420b0d75252d55daf21ee032a804a3c75eb6f15950bc88359988333475a",
    "signature": "0x333f164207e2a45aab6b6a8495a79550c27eb6c3cf1c9693dd70025880eb86b67bf9496cfb59f1d2c21732c7c2214cbadad284950792273055739e540e3d7e0d1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}