{
  "manageEntity": {
    "action": "Save",
    "entityId": "69505",
    "entityType": "Track",
    "nonce": "0xf1868adc113e8f2ac99aa6827210633a6062be8cf7dfe69838b1ac81626372d7",
    "signature": "0xe1ca2e5c90bd3946373bbe20c0b4d6badf8ff8ff32af626b96732081c3b5c26027f4885685cae8372e79e8cfda7dba8108798cbc40acd37093a1657d7a081b711b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}