{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0x13f5dbcba5ddc87e810264a8b9648c5e0bda3cd7eae03dedfafe5df8d8c3c816",
    "signature": "0xf2fa6eed64f750359d972d9cc9729f68ee2ac67c68804fb9eb37c912560c72453ebb324856f3662c81c1cf38fb52b6ddf38de4593167b2df09b594f95cfe2e7d1b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}