{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307",
    "entityType": "User",
    "nonce": "0xe8dfad3ba6b1af910f699cdb44dee43d490e6ea432b7fb4a863bdd5ca7f76b02",
    "signature": "0xca5ed0138ebebd0118abb7bb762993cc76e6b19a550da181ffa45ecdb9c3ea287308d104d55bae1f4a6c86aab60c03f18c9117be6b97a68bebfd4a76e19de7951c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}