{
  "manageEntity": {
    "action": "Save",
    "entityId": "567339885",
    "entityType": "Track",
    "nonce": "0xd60aaa4701a1136ac5af571fa144f1d99ac6cb51712ee873b039d1b94236c83a",
    "signature": "0x5a3f781eaca9095343ef240d398d5d6af4abb7b64b286f6bac3689c0122135b353d56fb0aadb419eba6e5130611658a85a0244789b9f4d5eb14dbdaeda1b77a21b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}