{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389780",
    "entityType": "User",
    "nonce": "0x4fa8c316cdba11f28cae8d67f34484696eeb1adc27bbf5a5e304c365b14dd803",
    "signature": "0x94d642b93cb97431ed92d02430c554c5b1fa0e3d299a766230cb4044e1410d133fd1c4438644e72d49b9a7feb6117b8920b02752600b31058be1f9a66dfdac031b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}