{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0xaeabac1418bbabf1c96c34801ee9c6e4d2e05da12dd82b819b7022d11942d28c",
    "signature": "0xf0b8304779b0764f391e48944e0e09530e89a4cfc908bf2701559e6b34dc890726419ee329487dfa60eb2f8e79927ff97ff666d804d9a712bdd9bd29385f85f01b",
    "signer": "0x81e9de9D1365F9c0cdeb3578Eff3bfC3122088d0",
    "userId": "8551894"
  }
}