{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfab4fbbf8193935c8b339685827636dee4e3dee9b6542f57ba318dcedc0c2b85",
    "signature": "0xd63b45ac3f23cf30d7b27568871513bbc1e01aab142e8871f9f9a980dd2d6e1d775a8ef73a645d3e8298076e569062f6e441ca59b41f8307913f597566009f0a1c",
    "signer": "0x7EEbbaB8164DE4D71251bbe51e4a3f9972f05C75",
    "userId": "776736354"
  }
}