{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54156",
    "entityType": "User",
    "nonce": "0xf71944b9f52d83946c55dacda039b60b37ef3ded00c6ec08700180baebe07a1f",
    "signature": "0x131d2b4fc02c8022a705a548366f5b56b779caade59344b313a3215a991efb8a6074ae076cf8a43b4166cfa02f74c950f706a53244374923fd559d207fe0bc131b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}