{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12646",
    "entityType": "User",
    "nonce": "0x575a56792d4255e7a528808fc5042a7189d6d094a7ac339bac84af2e360d922d",
    "signature": "0x462cd247bdc131660315da5e6b308a2738e59eb159fddb092a047b2144ef28d37ba867eda1f5d393e6c1b0826925085eb2a4b6fd69440ad76a4eb455ddfdba5d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}