{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8b1915bdb7d49f84beb8ebfe3e54f8469e9bc022a4f1819dd869548a9b81b468",
    "signature": "0xf4b0f56abe163c09a72d6c4b61450f5ac1d9fe7ecc20ac2247c813a69cdb5ba502f2f4ebdaf8994b18771b607e5bf9449051c51140464281bdc85b040334d4c41c",
    "signer": "0x85b05A5e7cF0feBb14BB5feC1E645dB5151F8e8b",
    "userId": "104634770"
  }
}