{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17537",
    "entityType": "User",
    "nonce": "0xbfe53f95c7da170322ba8f6a23a95733fb2485dd7542cc5c36f01746dd13e9e0",
    "signature": "0x7b1f3be052396652949d1d09d71747cd6a33c520cc6b524026b5e295a2e1763667d8f5184313c5ce8cc1895bbff069005dcfadef9bc1edc496f441f60abde3801c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}