{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb9dc31251d1c1af2bd837630441e78147efcee8a7e1424040fbdabac75d6a840",
    "signature": "0xe79e9072e674a9a9b91c52647f9d6ae10aa51d27d193a959e51371142e2558f4528a5a7326fd5b4342753d53477f07c8c29bc76b640d76174cd0d81e5bf31d9a1b",
    "signer": "0xa1219745aC2428C2a2b55Dbb996B8b7e8291E4f9",
    "userId": "848512601"
  }
}