{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77ef5854cf01684ac10caaae26a4816c39514eb51e51f3625f697d54f02f7267",
    "signature": "0xae7396f6b71df8ccecb299aeb45e2af740bd520a86cacf97921954960aa9ce27331f3f5610d8a2c0bd17c60073def6f9f1cb3697b4f3c66c2f652506e2bf79271c",
    "signer": "0x2De475Bf604136d752575F3b37d24dc094663D3E",
    "userId": "259985510"
  }
}