{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x863c0fbba0387591c0859a6cafc515785e1698cdb8b48aaf0d1fdc996cb328cd",
    "signature": "0xde2457f986de2df92ee034c04aba32d7fb48827a858904ed2d654af3315e36777c4b4870528cab5916062611eed50b826e7a692f82f3c5adf37d966834202ae41b",
    "signer": "0xb0F002ECbB1Dd492994A3Cb8F63B1103087Cd809",
    "userId": "903597781"
  }
}