{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889307575",
    "entityType": "User",
    "nonce": "0x66cc3a441298feb1c5331b5f0f3c6e0c5e82cd86086880b2d28498348bc95c2e",
    "signature": "0x37aa2e6becab7117a7910defa35aa4ecdaac8d035a1afcd44d5c0527a1aa6a5a667516599f5548943412e88bf81b5aea2d0ac489be4bd9c784b7299e49e652071b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}