{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "255385",
    "entityType": "User",
    "nonce": "0xa3ebde30295a019530baaf6ad0f739f3266534c5224c7b576136d6ea1edb9c1e",
    "signature": "0x3fe1694237bf22cdbae10cb8aab8a81e5d0bf438d05b0f756f60e21efa6fc49f2f4a0b0b8f41346a8e4511e17637e4785a05640ab9279dd0d92fc29780e898561b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}