{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd004bcba6bc446c06afe2a1c8db156a3af0cbe5e871609d96bc5c76da078f555",
    "signature": "0xe9c3840e95afb226022e658f2805bc72b3c3dc9291fc416ca0ad50ef6e41439f294b410ca7ce724269ed2c68756962297d74adf866db3cecfd14dc0a9d05a55e1b",
    "signer": "0x2D81e23538E92940893ef728A5b6af00F3a1e478",
    "userId": "47957710"
  }
}