{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbe2ca72285ecdddb3805032774a0ad71fe3478759a82a694a42e42f002cd179d",
    "signature": "0x06f2b19660b7b894c5f7fd4166da649a07858aed32dbffd4a442a4c2e6e3b8353b2d9beb1bcc0795aac4f6aca1ada7bd5a47ca33b9a727a80c44d4a5f21470b91b",
    "signer": "0x4775139b470b668e3674eFBc19f585516aFa80e4",
    "userId": "542041690"
  }
}