{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "639977873",
    "entityType": "User",
    "nonce": "0x7afb50bb7c79a2889b9939d54ee1e4f7b8b2f39cfcae0241cf0ec9de9ca64439",
    "signature": "0xf6beddd7a45db056075f033e00e0529e765aa9769e56b5e4dc71c6e35437bc8673aaa5154e2148b4c1ba0c3b2e2188ca3de22a3c9d3542430f898a06e5001c531c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}