{
  "manageEntity": {
    "action": "Save",
    "entityId": "92064169",
    "entityType": "Track",
    "nonce": "0xf0394b4e87bcf01a826fc6090b45a38a4a4e9f26400902887bf63f509d9e5297",
    "signature": "0xc0b2ffa0d2151def7c6e09ebca828b6e92bb1b17e8d57babbb310b4a0444baf25f3d6c05829b51e80a45813c0fd92ca2e8651f8940f9faa845e46e07d8ea8e301c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}