{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78123",
    "entityType": "User",
    "nonce": "0x4439a840436766352b0a1cca77aded3a0d71d1eb1441f94964991924371d9d22",
    "signature": "0xc38e566703a3311e981dfac42af38283a88e659c92a643211a403604ff6941476f65d219e1206cbb4bf921ae2f5679a52ba734c644129a24b7c58583673483ae1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}