{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0xc906bf3f14bd65e18b2d6bb46f9b7182cedc44e7b91a79ccb6d61839dbe3b10b",
    "signature": "0xdf9fb6cde4e5fb168eaa3cd2b253a9deaaa207b9fc4b792fb0b350ec6ec0e6496e6b531b7732276fd80ebe34dedf544758c3a59956d0b25d6e0a34fe503ffb581b",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}