{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307953552",
    "entityType": "User",
    "nonce": "0x3da69046446298d4d011db4737914a8ca74c3956e12d1c32166b0a96022cf718",
    "signature": "0xfe2af597c8c2f90a1ba89e0de4c857309b60fe3cec1b36f80327fe763e4d2bb87def779f338cf43d26551eca21b93ee2ffaea15bcbd2af269f30aab8c74fae961b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}