{
  "manageEntity": {
    "action": "Save",
    "entityId": "286242435",
    "entityType": "Track",
    "nonce": "0x751f5fa769a94e351b0e5b702b95f94daaad2fc98d25574601a1d83d04116ec1",
    "signature": "0x1dcfdd9f9891b3a7ab7b83227e61f8aa9ed4deb55ab5d44ea001afd0892f98e648d3318a41de768282cb8a8388d1874f4c53173c8e6811c79b1f576e447972691c",
    "signer": "0x38648cAE6c1E69869B895d522E9Bd0f99400A573",
    "userId": "859952725"
  }
}