{
  "manageEntity": {
    "action": "Save",
    "entityId": "1312249969",
    "entityType": "Track",
    "nonce": "0x1c686b5ac9f75ed22452cc15090d53bf302e89c3885a774856dda642786db18c",
    "signature": "0x92aef2df3bd5d390ca4c80fae02b755cdd173601cb957906a04b7d322562b3983fa6c8988ce1d00f3c2b281cc605240bd82871560fb5b74cc81b23d55ee330c41b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}