{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x404222981f95c4037e5a470541255ca6804abc2b1688dda227c1c684e6e84bae",
    "signature": "0x32a0e151ec4d376cd3e7e5b8e742f35bebca58aa12978ee7688c87434332e4976143cd8aae1023c68f8bb59449e7f6f7bcaa3a78102bb89691206bddc223ec621c",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}