{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157194",
    "entityType": "User",
    "nonce": "0x337d532cd6d689255132eba74c9566b9a3ebcb984466dbfb9e0b8f2785462c78",
    "signature": "0xda2950e2967e58c419cffe970337b5e6d65fce0f7cb58fb7983236d11014cc7a2b58bf9045e06bc17e171c7b00f831679f975f5ec29d829064840c400351a4061b",
    "signer": "0xd3cA7B55fFc21a012A4F3fa07C2C8D79aA70edDf",
    "userId": "669483561"
  }
}