{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x3d5b5fd776218eb598f493fd5d578c898a5b8dab659e9061c73b5a363620a7d1",
    "signature": "0xad7fb8403f011c62bc9d3941b67d8121e7e98b033250359a7a0cc32c67b5c8722f741e5adb24de85e840ba7e0e59e47e199611f229b1ae115e6d0353134b0d8c1c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}