{
  "manageEntity": {
    "action": "Save",
    "entityId": "225232011",
    "entityType": "Track",
    "nonce": "0x35bbcbf4c62356f5c2e94da0ab099213d1c565e888dc9cb7d195ef4c95d08fa5",
    "signature": "0x6838fad5538907d3d8ab0a3d1e675f215046b46278f9c4a900efca54c9db57f811ce41429fa9363bda48ec1018240920708133692885fd61f56d7e5ee668dad81b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}