{
  "manageEntity": {
    "action": "Save",
    "entityId": "2056139966",
    "entityType": "Track",
    "nonce": "0xcfbc03686584ec8c10c095a8b619cc3702055606c3669bbf163f892513f6e13d",
    "signature": "0x6ab0a97275c5a3c44ce6f7f4d12a75fcd9fd8a92f3401e6f8f9eadb3c4aecfaa17911c4294d0b2751148eaaf04ec783d7cb55d51964f07a52d26b82bfd8355301c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}