{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x82ba55c1abd59456aba19fa01e70a6e90495ac822f67da57bd788b02c4140a04",
    "signature": "0xbabbc1fdbd8754fb779b0dee85281ed7bdfea28c41c84641612714fa4bb7fec14b8f155819f2ca91f0e6f56da19a90f589e3bc0a13f7a7ad665de5c04dcd89ff1c",
    "signer": "0x4D9AfC008d64Dd37996F22F317f8f3F49F4A57C1",
    "userId": "220432973"
  }
}