{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193670137",
    "entityType": "User",
    "nonce": "0x1f09ea8d5da7b2dd31985e4e429dd9f55cade238720201b3ac340c8c2ff6031a",
    "signature": "0xca0fd4134bf7abd9d0da562101f37380d73822b6eeead7d3c3da68968ccbd90a7f4f0eb76893c717e0a6f90d8f491a75ecd183038023eb3510c403302d6777f91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}