{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "677519449",
    "entityType": "User",
    "nonce": "0x55b2381355fbf80ad96fd0c39cea5b7cedd2ed69f5dce7c3902ee07ea787d51c",
    "signature": "0x409338064c73bc6fdd9966afcb1957f3088c32a17cee9932281ba514fa207cf457a834291b6b1f77c3bb7d084a725637d343066cd44ef2a2366d72b6a5f1db071c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}