{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951886446",
    "entityType": "User",
    "nonce": "0x8f0f3ccc679e14f07b494b8797b5c4142ce92b92890bd22f428efe469c2f4750",
    "signature": "0xf6833efe885e592c09a46f86fc627705c02d6db98f7a65eb46b27313480d3f4b261e96c08b1f8e31c028fad1055614b3169547ce3c2765eaaf1250b25c1497601c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}