{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306115",
    "entityType": "User",
    "nonce": "0x5de937939bb69e57ab7ffd3810ca2339653950874ad90ce566e964597a8a368b",
    "signature": "0xaf752aa7e5506c5b7f5f4c01d1305b6f92284e4f219687a8ce7c4817f985a28a777780a1d4ce54dae903a9c000b8cf3de022aae051d5025ea583a5c1e73f43ce1c",
    "signer": "0x9a5c768De106BE48C39290B55c20D8C5D6A7f6bA",
    "userId": "539482786"
  }
}