{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xb166ee8e4b1cfa21207cdbc8898bc09a0eeb0fb707f4cf7cbcb84680cc771eb2",
    "signature": "0xb47e807a0ed45c48738ec3586987221c29e5cdfe43e42592e196a1f41777930578e7dab96329615f3f8da0da60f188ed0db51c2ca9f7f50dbcbf14f21a343d361c",
    "signer": "0xC7DC41BAb5b665A2c8A5F2b97Dc8c04792343A5C",
    "userId": "191336840"
  }
}