{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57e0a60afff4c924616c759e6d62f3b0bbe1abc2796f66c46e120c9a0a9c65c0",
    "signature": "0x1dad17d5fb7758d03908016f429ba714737ceb369e1dfd6f3334821149efed920eb8b80aefbd2b9621d0a2a73b34f8355930be34daf3f8623cc38535fddbdddb1b",
    "signer": "0xe198CdD4E17CF112e45f036129632d11d1e40247",
    "userId": "679386121"
  }
}