{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66441",
    "entityType": "User",
    "nonce": "0x24c3637d054a085f92b766e9bcf9bb48d6286bd474f9719cf4846399e766d299",
    "signature": "0x803eb5f108c01eb4874b96a8a3b80c458defd8ebc19996a76d8c4b87654866d26c55227c456df1bbdcc5386e3cad3afb2e96f70ec9a89b82abebc07ac1d615db1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}