{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "418385",
    "entityType": "User",
    "nonce": "0x2670d6ded616a6a1abb321ab756a587a959929cad5e4c89b7b025465da647f8f",
    "signature": "0x4c6f085efa2688691a1706bae9f2515f7d42fc5c7e725d753c5d81f8a4959ba31456baeada0b0203562f968b673a063133a3a49c111858a6ab27ddb1a1e5e7b41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}