{
  "manageEntity": {
    "action": "Save",
    "entityId": "467429894",
    "entityType": "Track",
    "nonce": "0xc6c3b91bcd2e35c9109c7a07d4d5fd8db365a5921155005dd9ebd977f2ddab91",
    "signature": "0x102bc53d03afd769d6a1b551e886d9528b702321b0cc0c728c11471d94a256262bc9e3275c20e115342a2d76607037e98b3fed371777bdd2602c3525d47a5c761b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}