{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991071",
    "entityType": "User",
    "nonce": "0x1ecd55070b33b519c1980addd3bb72f681f2c5e2044bfc1542f695d142fa7797",
    "signature": "0x7b27497a3428ab081a0a8268d7e8e7771bd7ca62fead9454f1e0370bfe4ba06f69ab2b4c49636248037cbed26dbd8c9c5305dd9c3cc65b2380f2b9d4f21435851b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}