{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x37b5a2c5e7876867fc1f32eb54cb71d076ebcd00032aa3bba6bfb6eec68507e8",
    "signature": "0xec50ab0a7416d9f9559f953c56b735cea02cbd62461ddcbd31c61cd2790b2e1b1d48fa6c470771cf445b199927fe182a6105dd1e8dd889e611dcb48d936a938b1c",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}