{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344158827",
    "entityType": "User",
    "nonce": "0xe340bf2b328d8b0621db2adfda82d86ff36b5eafc2121d048bc6d3df5c078159",
    "signature": "0xa803d81289335ccf93eed822734ab51f3c5eb48baeb09b0bcf7415cbe5d591ee7320f9e78a3a4529cfb8e4c235be908f2a49d042591f76a0346474cc82f49da91b",
    "signer": "0xf7D8500027A682fF112c811B35eb94F329d012F7",
    "userId": "440187715"
  }
}