{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "810228312",
    "entityType": "User",
    "nonce": "0x4d730601b62994b9c4bb0a4af4c392009107da1243b78ef11d31c9339d105505",
    "signature": "0x8221322dfa7af77c0039c8da1c552adc30841671a4e533881c26cdca5d1c9a77570689f96ea288b544d67ec7cdca87202c0111a838672dedffe29971ee6d69f31c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}