{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55877",
    "entityType": "User",
    "nonce": "0xaa3e06b4fc45257767815214902aa83a18a93e6931b619510abf84326054e9f9",
    "signature": "0xf964de03568c30ca99a866d6c7b882f0362c5e781c5f3200beacaa014486898816c88773ce8f5623f506049c3d46523b6486a5e37a408fdd6171e9d7d55b332e1c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}