{
  "manageEntity": {
    "action": "Save",
    "entityId": "1483280947",
    "entityType": "Track",
    "nonce": "0x11434257de0564938d24848c5c3335459b0b59a5ddda8d92c9a2c8a76f4da356",
    "signature": "0x9e1e793c16c87f833c33636cdc19cf9e21c43d006c50a8f502c25da0348236743aa196390e5178dbc49f13056f6867977e5c5fbffa622b3e1cf33e7acbb200211b",
    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}