{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370763",
    "entityType": "User",
    "nonce": "0xe7ec43ecb486598df2df313fae774762f5bde24f055b28f5e9caa73d494f59a8",
    "signature": "0x64d648280723a8933c1486434b215e99e46ee7f524e8b6946159503560b1bd8b55880a3f08dda26bf50413a24e84af44b00139aec3ec5daf8053c31d027fad861b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}