{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdba1837cc68bd84d27523b56b3a2279ddbb61ecf1efdde3faf0b867ec6e2de2f",
    "signature": "0xed1fe513faad1f705e131abbaae39371ec4646cc994244ace9fa3827e8f52d4920e721057cab2ad525b1db0186e4cc2a0ebadaa077792ca037d55472eea111441b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}