{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x208c32eed6fe20e2d4cae51ff50478981c9a992b57648dca24232576f17dca97",
    "signature": "0x16ec0efcfcd3cad4bed982315d8cbccf1db30daa887789db77d94b952e83f35a5d08379127a52aed497c60549cd4d8daf867ca5666f9462f44c550468f3ff7fe1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}